test/api/test-ot-metrics-tt-var.c - third_party/harfbuzz - Git at Google

 /*
  * Copyright © 2019 Adobe Inc.
  *
  *  This is part of HarfBuzz, a text shaping library.
  *
  * Permission is hereby granted, without written agreement and without
  * license or royalty fees, to use, copy, modify, and distribute this
  * software and its documentation for any purpose, provided that the
  * above copyright notice and the following two paragraphs appear in
  * all copies of this software.
  *
  * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
  * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
  * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
  * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
  * DAMAGE.
  *
  * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
  * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
  * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
  * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
  * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
  *
  * Adobe Author(s): Michiharu Ariza
  */

 #include "hb-test.h"
 #include <hb-ot.h>

 /* Unit tests for glyph advance widths and extents of TrueType variable fonts */

 static void
 test_extents_tt_var (void)
 {
   hb_face_t *face = hb_test_open_font_file ("fonts/SourceSansVariable-Roman-nohvar-41,C1.ttf");
   g_assert (face);
   hb_font_t *font = hb_font_create (face);
   hb_face_destroy (face);
   g_assert (font);
   hb_ot_font_set_funcs (font);

   hb_glyph_extents_t  extents;
   hb_bool_t result = hb_font_get_glyph_extents (font, 2, &extents);
   g_assert (result);

   g_assert_cmpint (extents.x_bearing, ==, 10);
   g_assert_cmpint (extents.y_bearing, ==, 846);
   g_assert_cmpint (extents.width, ==, 500);
   g_assert_cmpint (extents.height, ==, -846);

   float coords[1] = { 500.0f };
   hb_font_set_var_coords_design (font, coords, 1);
   result = hb_font_get_glyph_extents (font, 2, &extents);
   g_assert (result);

   g_assert_cmpint (extents.x_bearing, ==, 0);
   g_assert_cmpint (extents.y_bearing, ==, 874);
   g_assert_cmpint (extents.width, ==, 551);
   g_assert_cmpint (extents.height, ==, -874);

   hb_font_destroy (font);
 }

 static void
 test_advance_tt_var_nohvar (void)
 {
   hb_face_t *face = hb_test_open_font_file ("fonts/SourceSansVariable-Roman-nohvar-41,C1.ttf");
   g_assert (face);
   hb_font_t *font = hb_font_create (face);
   hb_face_destroy (face);
   g_assert (font);
   hb_ot_font_set_funcs (font);

   hb_position_t x, y;
   hb_font_get_glyph_advance_for_direction(font, 2, HB_DIRECTION_LTR, &x, &y);

   g_assert_cmpint (x, ==, 520);
   g_assert_cmpint (y, ==, 0);

   hb_font_get_glyph_advance_for_direction(font, 2, HB_DIRECTION_TTB, &x, &y);

   g_assert_cmpint (x, ==, 0);
   g_assert_cmpint (y, ==, -1257);

   float coords[1] = { 500.0f };
   hb_font_set_var_coords_design (font, coords, 1);
   hb_font_get_glyph_advance_for_direction(font, 2, HB_DIRECTION_LTR, &x, &y);

   g_assert_cmpint (x, ==, 551);
   g_assert_cmpint (y, ==, 0);

   hb_font_get_glyph_advance_for_direction(font, 2, HB_DIRECTION_TTB, &x, &y);

   g_assert_cmpint (x, ==, 0);
   g_assert_cmpint (y, ==, -1257);

   hb_font_destroy (font);
 }

 static void
 test_advance_tt_var_hvarvvar (void)
 {
   hb_face_t *face = hb_test_open_font_file ("fonts/SourceSerifVariable-Roman-VVAR.abc.ttf");
   g_assert (face);
   hb_font_t *font = hb_font_create (face);
   hb_face_destroy (face);
   g_assert (font);
   hb_ot_font_set_funcs (font);

   hb_position_t x, y;
   hb_font_get_glyph_advance_for_direction(font, 1, HB_DIRECTION_LTR, &x, &y);

   g_assert_cmpint (x, ==, 508);
   g_assert_cmpint (y, ==, 0);

   hb_font_get_glyph_advance_for_direction(font, 1, HB_DIRECTION_TTB, &x, &y);

   g_assert_cmpint (x, ==, 0);
   g_assert_cmpint (y, ==, -1000);

   float coords[1] = { 700.0f };
   hb_font_set_var_coords_design (font, coords, 1);
   hb_font_get_glyph_advance_for_direction(font, 1, HB_DIRECTION_LTR, &x, &y);

   g_assert_cmpint (x, ==, 531);
   g_assert_cmpint (y, ==, 0);

   hb_font_get_glyph_advance_for_direction(font, 1, HB_DIRECTION_TTB, &x, &y);

   g_assert_cmpint (x, ==, 0);
   g_assert_cmpint (y, ==, -1012);

   hb_font_destroy (font);
 }

 static void
 test_advance_tt_var_anchor (void)
 {
   hb_face_t *face = hb_test_open_font_file ("fonts/SourceSansVariable-Roman.anchor.ttf");
   g_assert (face);
   hb_font_t *font = hb_font_create (face);
   hb_face_destroy (face);
   g_assert (font);
   hb_ot_font_set_funcs (font);

   hb_glyph_extents_t  extents;
   hb_bool_t result = hb_font_get_glyph_extents (font, 2, &extents);
   g_assert (result);

   g_assert_cmpint (extents.x_bearing, ==, 56);
   g_assert_cmpint (extents.y_bearing, ==, 672);
   g_assert_cmpint (extents.width, ==, 556);
   g_assert_cmpint (extents.height, ==, -684);

   float coords[1] = { 500.0f };
   hb_font_set_var_coords_design (font, coords, 1);
   result = hb_font_get_glyph_extents (font, 2, &extents);
   g_assert (result);

   g_assert_cmpint (extents.x_bearing, ==, 50);
   g_assert_cmpint (extents.y_bearing, ==, 667);
   g_assert_cmpint (extents.width, ==, 592);
   g_assert_cmpint (extents.height, ==, -679);

   hb_font_destroy (font);
 }

 static void
 test_extents_tt_var_comp (void)
 {
   hb_face_t *face = hb_test_open_font_file ("fonts/SourceSansVariable-Roman.modcomp.ttf");
   g_assert (face);
   hb_font_t *font = hb_font_create (face);
   hb_face_destroy (face);
   g_assert (font);
   hb_ot_font_set_funcs (font);

   hb_glyph_extents_t  extents;
   float coords[1] = { 800.0f };
   hb_font_set_var_coords_design (font, coords, 1);

   hb_bool_t result;
   result = hb_font_get_glyph_extents (font, 2, &extents);	/* Ccedilla, cedilla y-scaled by 0.8, with unscaled component offset */
   g_assert (result);

   g_assert_cmpint (extents.x_bearing, ==, 19);
   g_assert_cmpint (extents.y_bearing, ==, 663);
   g_assert_cmpint (extents.width, ==, 519);
   g_assert_cmpint (extents.height, ==, -895);

   result = hb_font_get_glyph_extents (font, 3, &extents);	/* Cacute, acute y-scaled by 0.8, with unscaled component offset (default) */
   g_assert (result);

   g_assert_cmpint (extents.x_bearing, ==, 19);
   g_assert_cmpint (extents.y_bearing, ==, 909);
   g_assert_cmpint (extents.width, ==, 519);
   g_assert_cmpint (extents.height, ==, -921);

   result = hb_font_get_glyph_extents (font, 4, &extents);	/* Ccaron, caron y-scaled by 0.8, with scaled component offset */
   g_assert (result);

   g_assert_cmpint (extents.x_bearing, ==, 19);
   g_assert_cmpint (extents.y_bearing, ==, 866);
   g_assert_cmpint (extents.width, ==, 519);
   g_assert_cmpint (extents.height, ==, -878);

   hb_font_destroy (font);
 }

 static void
 test_advance_tt_var_comp_v (void)
 {
   hb_face_t *face = hb_test_open_font_file ("fonts/SourceSansVariable-Roman.modcomp.ttf");
   g_assert (face);
   hb_font_t *font = hb_font_create (face);
   hb_face_destroy (face);
   g_assert (font);
   hb_ot_font_set_funcs (font);

   float coords[1] = { 800.0f };
   hb_font_set_var_coords_design (font, coords, 1);

   hb_position_t x, y;
   hb_font_get_glyph_advance_for_direction(font, 2, HB_DIRECTION_TTB, &x, &y);	/* No VVAR; 'C' in composite Ccedilla determines metrics */

   g_assert_cmpint (x, ==, 0);
   g_assert_cmpint (y, ==, -991);

   hb_font_get_glyph_origin_for_direction(font, 2, HB_DIRECTION_TTB, &x, &y);

   g_assert_cmpint (x, ==, 292);
   g_assert_cmpint (y, ==, 1013);

   hb_font_destroy (font);
 }

 static void
 test_advance_tt_var_gvar_infer (void)
 {
   hb_face_t *face = hb_test_open_font_file ("fonts/TestGVAREight.ttf");
   hb_font_t *font = hb_font_create (face);
   hb_ot_font_set_funcs (font);
   hb_face_destroy (face);

   int coords[6] = {100};
   hb_font_set_var_coords_normalized (font, coords, 6);

   hb_glyph_extents_t extents = {0};
   g_assert (hb_font_get_glyph_extents (font, 4, &extents));

   hb_font_destroy (font);
 }

 int
 main (int argc, char **argv)
 {
   hb_test_init (&argc, &argv);

   hb_test_add (test_extents_tt_var);
   hb_test_add (test_advance_tt_var_nohvar);
   hb_test_add (test_advance_tt_var_hvarvvar);
   hb_test_add (test_advance_tt_var_anchor);
   hb_test_add (test_extents_tt_var_comp);
   hb_test_add (test_advance_tt_var_comp_v);
   hb_test_add (test_advance_tt_var_gvar_infer);

   return hb_test_run ();
 }
	/*
	* Copyright © 2019 Adobe Inc.
	*
	* This is part of HarfBuzz, a text shaping library.
	*
	* Permission is hereby granted, without written agreement and without
	* license or royalty fees, to use, copy, modify, and distribute this
	* software and its documentation for any purpose, provided that the
	* above copyright notice and the following two paragraphs appear in
	* all copies of this software.
	*
	* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
	* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
	* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
	* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
	* DAMAGE.
	*
	* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
	* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
	* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
	* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
	* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
	*
	* Adobe Author(s): Michiharu Ariza
	*/

	#include "hb-test.h"
	#include <hb-ot.h>

	/* Unit tests for glyph advance widths and extents of TrueType variable fonts */

	static void
	test_extents_tt_var (void)
	{
	hb_face_t *face = hb_test_open_font_file ("fonts/SourceSansVariable-Roman-nohvar-41,C1.ttf");
	g_assert (face);
	hb_font_t *font = hb_font_create (face);
	hb_face_destroy (face);
	g_assert (font);
	hb_ot_font_set_funcs (font);

	hb_glyph_extents_t extents;
	hb_bool_t result = hb_font_get_glyph_extents (font, 2, &extents);
	g_assert (result);

	g_assert_cmpint (extents.x_bearing, ==, 10);
	g_assert_cmpint (extents.y_bearing, ==, 846);
	g_assert_cmpint (extents.width, ==, 500);
	g_assert_cmpint (extents.height, ==, -846);

	float coords[1] = { 500.0f };
	hb_font_set_var_coords_design (font, coords, 1);
	result = hb_font_get_glyph_extents (font, 2, &extents);
	g_assert (result);

	g_assert_cmpint (extents.x_bearing, ==, 0);
	g_assert_cmpint (extents.y_bearing, ==, 874);
	g_assert_cmpint (extents.width, ==, 551);
	g_assert_cmpint (extents.height, ==, -874);

	hb_font_destroy (font);
	}

	static void
	test_advance_tt_var_nohvar (void)
	{
	hb_face_t *face = hb_test_open_font_file ("fonts/SourceSansVariable-Roman-nohvar-41,C1.ttf");
	g_assert (face);
	hb_font_t *font = hb_font_create (face);
	hb_face_destroy (face);
	g_assert (font);
	hb_ot_font_set_funcs (font);

	hb_position_t x, y;
	hb_font_get_glyph_advance_for_direction(font, 2, HB_DIRECTION_LTR, &x, &y);

	g_assert_cmpint (x, ==, 520);
	g_assert_cmpint (y, ==, 0);

	hb_font_get_glyph_advance_for_direction(font, 2, HB_DIRECTION_TTB, &x, &y);

	g_assert_cmpint (x, ==, 0);
	g_assert_cmpint (y, ==, -1257);

	float coords[1] = { 500.0f };
	hb_font_set_var_coords_design (font, coords, 1);
	hb_font_get_glyph_advance_for_direction(font, 2, HB_DIRECTION_LTR, &x, &y);

	g_assert_cmpint (x, ==, 551);
	g_assert_cmpint (y, ==, 0);

	hb_font_get_glyph_advance_for_direction(font, 2, HB_DIRECTION_TTB, &x, &y);

	g_assert_cmpint (x, ==, 0);
	g_assert_cmpint (y, ==, -1257);

	hb_font_destroy (font);
	}

	static void
	test_advance_tt_var_hvarvvar (void)
	{
	hb_face_t *face = hb_test_open_font_file ("fonts/SourceSerifVariable-Roman-VVAR.abc.ttf");
	g_assert (face);
	hb_font_t *font = hb_font_create (face);
	hb_face_destroy (face);
	g_assert (font);
	hb_ot_font_set_funcs (font);

	hb_position_t x, y;
	hb_font_get_glyph_advance_for_direction(font, 1, HB_DIRECTION_LTR, &x, &y);

	g_assert_cmpint (x, ==, 508);
	g_assert_cmpint (y, ==, 0);

	hb_font_get_glyph_advance_for_direction(font, 1, HB_DIRECTION_TTB, &x, &y);

	g_assert_cmpint (x, ==, 0);
	g_assert_cmpint (y, ==, -1000);

	float coords[1] = { 700.0f };
	hb_font_set_var_coords_design (font, coords, 1);
	hb_font_get_glyph_advance_for_direction(font, 1, HB_DIRECTION_LTR, &x, &y);

	g_assert_cmpint (x, ==, 531);
	g_assert_cmpint (y, ==, 0);

	hb_font_get_glyph_advance_for_direction(font, 1, HB_DIRECTION_TTB, &x, &y);

	g_assert_cmpint (x, ==, 0);
	g_assert_cmpint (y, ==, -1012);

	hb_font_destroy (font);
	}

	static void
	test_advance_tt_var_anchor (void)
	{
	hb_face_t *face = hb_test_open_font_file ("fonts/SourceSansVariable-Roman.anchor.ttf");
	g_assert (face);
	hb_font_t *font = hb_font_create (face);
	hb_face_destroy (face);
	g_assert (font);
	hb_ot_font_set_funcs (font);

	hb_glyph_extents_t extents;
	hb_bool_t result = hb_font_get_glyph_extents (font, 2, &extents);
	g_assert (result);

	g_assert_cmpint (extents.x_bearing, ==, 56);
	g_assert_cmpint (extents.y_bearing, ==, 672);
	g_assert_cmpint (extents.width, ==, 556);
	g_assert_cmpint (extents.height, ==, -684);

	float coords[1] = { 500.0f };
	hb_font_set_var_coords_design (font, coords, 1);
	result = hb_font_get_glyph_extents (font, 2, &extents);
	g_assert (result);

	g_assert_cmpint (extents.x_bearing, ==, 50);
	g_assert_cmpint (extents.y_bearing, ==, 667);
	g_assert_cmpint (extents.width, ==, 592);
	g_assert_cmpint (extents.height, ==, -679);

	hb_font_destroy (font);
	}

	static void
	test_extents_tt_var_comp (void)
	{
	hb_face_t *face = hb_test_open_font_file ("fonts/SourceSansVariable-Roman.modcomp.ttf");
	g_assert (face);
	hb_font_t *font = hb_font_create (face);
	hb_face_destroy (face);
	g_assert (font);
	hb_ot_font_set_funcs (font);

	hb_glyph_extents_t extents;
	float coords[1] = { 800.0f };
	hb_font_set_var_coords_design (font, coords, 1);

	hb_bool_t result;
	result = hb_font_get_glyph_extents (font, 2, &extents); /* Ccedilla, cedilla y-scaled by 0.8, with unscaled component offset */
	g_assert (result);

	g_assert_cmpint (extents.x_bearing, ==, 19);
	g_assert_cmpint (extents.y_bearing, ==, 663);
	g_assert_cmpint (extents.width, ==, 519);
	g_assert_cmpint (extents.height, ==, -895);

	result = hb_font_get_glyph_extents (font, 3, &extents); /* Cacute, acute y-scaled by 0.8, with unscaled component offset (default) */
	g_assert (result);

	g_assert_cmpint (extents.x_bearing, ==, 19);
	g_assert_cmpint (extents.y_bearing, ==, 909);
	g_assert_cmpint (extents.width, ==, 519);
	g_assert_cmpint (extents.height, ==, -921);

	result = hb_font_get_glyph_extents (font, 4, &extents); /* Ccaron, caron y-scaled by 0.8, with scaled component offset */
	g_assert (result);

	g_assert_cmpint (extents.x_bearing, ==, 19);
	g_assert_cmpint (extents.y_bearing, ==, 866);
	g_assert_cmpint (extents.width, ==, 519);
	g_assert_cmpint (extents.height, ==, -878);

	hb_font_destroy (font);
	}

	static void
	test_advance_tt_var_comp_v (void)
	{
	hb_face_t *face = hb_test_open_font_file ("fonts/SourceSansVariable-Roman.modcomp.ttf");
	g_assert (face);
	hb_font_t *font = hb_font_create (face);
	hb_face_destroy (face);
	g_assert (font);
	hb_ot_font_set_funcs (font);

	float coords[1] = { 800.0f };
	hb_font_set_var_coords_design (font, coords, 1);

	hb_position_t x, y;
	hb_font_get_glyph_advance_for_direction(font, 2, HB_DIRECTION_TTB, &x, &y); /* No VVAR; 'C' in composite Ccedilla determines metrics */

	g_assert_cmpint (x, ==, 0);
	g_assert_cmpint (y, ==, -991);

	hb_font_get_glyph_origin_for_direction(font, 2, HB_DIRECTION_TTB, &x, &y);

	g_assert_cmpint (x, ==, 292);
	g_assert_cmpint (y, ==, 1013);

	hb_font_destroy (font);
	}

	static void
	test_advance_tt_var_gvar_infer (void)
	{
	hb_face_t *face = hb_test_open_font_file ("fonts/TestGVAREight.ttf");
	hb_font_t *font = hb_font_create (face);
	hb_ot_font_set_funcs (font);
	hb_face_destroy (face);

	int coords[6] = {100};
	hb_font_set_var_coords_normalized (font, coords, 6);

	hb_glyph_extents_t extents = {0};
	g_assert (hb_font_get_glyph_extents (font, 4, &extents));

	hb_font_destroy (font);
	}

	int
	main (int argc, char **argv)
	{
	hb_test_init (&argc, &argv);

	hb_test_add (test_extents_tt_var);
	hb_test_add (test_advance_tt_var_nohvar);
	hb_test_add (test_advance_tt_var_hvarvvar);
	hb_test_add (test_advance_tt_var_anchor);
	hb_test_add (test_extents_tt_var_comp);
	hb_test_add (test_advance_tt_var_comp_v);
	hb_test_add (test_advance_tt_var_gvar_infer);

	return hb_test_run ();
	}